GN 51.5 Retaining magnets technical informations Specification Disc-shaped, with female thread, with rubber jacket Steel part, zinc-plated Rubber jacket, Elastomer (TPE), 73 shore, black Material of the magnet Neodymium, iron, boron NdFeB ND, temperature resistant up to 80C Features and applications Retaining magnets GN 51.7 are a shielded magnetic system with rubber jacket. The rubber jacket protects sensitive surfaces from being damaged by the magnet and also delivers a higher friction coefficient, resulting in high lateral adhesion forces. Standard Elements Main dimensions Nominal adhesive forces Weight d d Description h t1 t2 in N g 1 2 GN 51.5-ND-22 22 M 4 6 4.5 0.8 35 9 GN 51.5-ND-31 31 M 5 6 4.5 0.8 75 21GN 51.5-ND-43 43 M 4 5.5 4 0.8 85 29 GN 51.5-ND-66 66 M 6 8.5 6 1.8 180 100 GN 51.5-ND-88 88 M 6 8.5 6 1.8 420 186